Will Svitek looks unlikely to play

FOXBOROUGH, Mass. -- Veteran offensive tackle/guard Will Svitek was absent for the start of Friday's practice, as he's missed the entire week with a right knee injury. Svitek, who projects to a backup role at both tackle spots and right guard, is expected to miss Sunday's season opener against the Bills.

Every other player, including tight end Rob Gronkowski, was present for the start of Friday's workout held in shells (light shoulder pads) and helmets. Media members were present for warmup jogging and stretching.

Svitek's absence shines a spotlight on the Patriots' offensive line depth.

Svitek projected to the No. 7 spot on the depth chart, and the Patriots generally like to go into games with seven active linemen.

That spot now could be filled by undrafted rookie Chris Barker, a center/guard who was claimed on waivers from the Dolphins, unless the team promotes one of their three offensive linemen from the practice squad (guard Josh Kline, tackle Jordan Devey, or tackle R.J. Dill).